Over the last two afternoons I noticed the daily highs on wunderground were consistently lower than the current temperatures. You would think that that would be trivial to fix.

87°F today? Rugby. I want winter to come back...

Forecastfox may be getting its info from weather.com. They tend to "predict" temperatures that are the average for that day of the year with no regard for aberrant local conditions. (okay, sometimes they have the current day close to accurate, but the very next day they assume will drop back into the norm, even if it means a 20°F shift)